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Section 3 - Operation

Transmission Operation

The 1407 Twindisc Powershift transmission is operated by a single control lever (1).. Because the transmission has only one control lever, it is extremely easy to use..

NOTE: The control lever is equipped with a neutral lock button (2). The control lever may only be moved to the forward or reverse positions if the neutral lock button on the control lever knob is depressed. Neutral may be selected without depressing the neutral lock button.

The control lever is used to select forward or reverse travel and to change transmission speeds.. Move the lever forward for forward travel and rearward for reverse travel..

IMPORTANT: Shifting the transmission at low throttle setting and a light draft load will extend clutch life.

The control lever is also used to make instantaneous upward or downward gear ratio changes.. Nudge the lever to the right for upward changes and to the left for downward changes.. (In this context, “nudge” means move the lever and then release..)

Consecutive gear ratio changes may be made, either by nudging the lever several times or by holding the lever to the left or right and allowing the transmission to shift through the gear ratios automatically..

NOTE: Reverse gears are displayed as Rl and R2.

Automatic Range Select

Depressing the clutch pedal while the tractor is moving causes a neutral condition, allowing the electronic control to automatically select a transmission range matching tractor ground and engine speeds when the clutch pedal is released.. For example, if the tractor is in ninth gear forward and the operator depresses the clutch pedal, tractor ground speed will be reduced but engine RPM will remain the same.. The transmission controller will sense the reduction in ground speed and automatically shift the transmission down to a gear that will match the ground speed when the clutch pedal is released..

If the clutch pedal is held down and the tractor comes to a rolling stop, the transmission controller will shift the tractor to first gear..

The transmission will not shift to neutral unless the control lever is put in the neutral position.

1

 

2

F

 

M

 

R

CRUISE

N

 

OFF

(SET)

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Forward/Reverse Shifting

The automatic modulation feature of the 1407 Twindisc Powershift transmission allows the transmission to be shuttled from a pre-selected forward gear (1st through 7th gear) to R1 using the control lever.. Shuttling the control lever back to forward will return the tractor to the pre-selected gear up to 7th gear..

It is not necessary to come to a complete stop for this shuttle shifting operation..

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